# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import unittest

import numpy as np

import paddle


class LinearNet(paddle.nn.Layer):
    def __init__(self):
        super().__init__()
        self._linear = paddle.nn.Linear(128, 10)

    def forward(self, x):
        return self._linear(x)


class Logic(paddle.nn.Layer):
    def __init__(self):
        super().__init__()

    def forward(self, x, y, z):
        if z:
            return x
        else:
            return y


class TestExportWithTensor(unittest.TestCase):
    def test_with_tensor(self):
        self.x_spec = paddle.static.InputSpec(
            shape=[None, 128], dtype='float32'
        )
        model = LinearNet()
        paddle.onnx.export(model, 'linear_net', input_spec=[self.x_spec])


class TestExportWithTensor1(unittest.TestCase):
    def test_with_tensor(self):
        self.x = paddle.to_tensor(np.random.random((1, 128)))
        model = LinearNet()
        paddle.onnx.export(model, 'linear_net', input_spec=[self.x])


class TestExportPrunedGraph(unittest.TestCase):
    def test_prune_graph(self):
        model = Logic()
        self.x = paddle.to_tensor(np.array([1]))
        self.y = paddle.to_tensor(np.array([-1]))
        paddle.jit.to_static(model, full_graph=True)
        out = model(self.x, self.y, z=True)
        paddle.onnx.export(
            model,
            'pruned',
            input_spec=[self.x, self.y, True],
            output_spec=[out],
            input_names_after_prune=[self.x.name],
        )


if __name__ == '__main__':
    unittest.main()
